AlanH
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 Apr 9 comment Functional equations and generating functions okay so you used the generalized binomial theorem, then how do you get the coefficient of $x^k$ in (3)? Apr 9 revised Functional equations and generating functions added 4 characters in body Apr 9 comment Functional equations and generating functions @robjohn I was curious what rollback was. I'll change it back; I didn't edits bumped questions up. Sorry. I'm still going through your response. Apr 9 awarded Cleanup Apr 9 revised Functional equations and generating functions rolled back to a previous revision Apr 9 revised Functional equations and generating functions added 5 characters in body Apr 9 asked Functional equations and generating functions Apr 3 comment Recurrence relation for number of different square subboards I see that, but I don't see how my text arrived at $a_n = a_{n-1} + 2\binom{n}{2} + n$ and $a_n = 2\binom{n+1}{3} + \binom{n+1}{2}$ Apr 3 accepted Recurrence relation for number of different square subboards Apr 3 asked Recurrence relation for number of different square subboards Apr 3 comment Stupid question - How do I calculate $\Phi(1.5)$? Use a z-table... Apr 1 accepted Definition of a covering and how it applies to the following example Mar 31 revised symmetric-groups wiki excerpt added 1 characters in body Mar 31 suggested approved edit on symmetric-groups tag wiki excerpt Mar 31 answered Question about homomorphisms and symmetric groups Mar 31 revised Question about homomorphisms and symmetric groups adjusted some latex Mar 31 suggested approved edit on Question about homomorphisms and symmetric groups Mar 31 awarded Autobiographer Mar 30 revised Find limit as $y\to \infty$ latex cleaning Mar 30 suggested approved edit on Find limit as $y\to \infty$